Process Skids, Modular Equipment & Packaged Plants worked example

Field Install Savings at 65% shop build efficiency: a worked example

This worked example runs the field install savings numbers for a tougher week than the baseline: 65% shop build efficiency instead of the typical 90%. Field Install Savings quantifies how much work your shop absorbs per assembly hour so you can compare shop-fabricated modularization against stick-building in the field.

The inputs for this scenario

  • Modules shop-fabricated: 1,200 units (held at the documented default)
  • Assembly hours consumed: 8 hr (held at the documented default)
  • Shop build efficiency: 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw field install savings = completed output รท runtime.
  • Effective throughput works out to 97.5 units at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 units at these inputs.
  • Efficiency works out to 65 % at these inputs.
  • Runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where shop build efficiency sits at 90% and the headline result is 135 units, this scenario comes in 27.78% below the baseline at 97.5 units.
  • Use it when building a modularization business case or benchmarking one shop build against another. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Effective throughput: 97.5 units (headline result)
  • Raw throughput: 150 units
  • Efficiency: 65 %
  • Runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Field Install Savings calculator, set shop build efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.